<!DOCTYPE html>
<html lang="zh-Hans">
  <head>
    <title>yellow</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
  </head>
  <body style="background-color: yellow;">
    <h1>我是黄色页面</h1>
  </body>
</html>